#round方法（数值，保留2位小数）
a = "%.03f"%1.3335
print(a,type(a))

b = round(float(a),1)

print(b)

b = round(float(a),2)
print(b)
A = zip(("a","b","c","d","e"),(1,2,3,4,5))
A0 = dict(A)